Aeration is an important factor in keeping lawns healthy, it simply involves making small, but fairly deep holes through the grass into the soil.
These holes allow air, water and essential nutrients to get from the surface into the soil. (Think of it as piercing a boil to let the bad stuff out and the good stuff in).
These are the main benefits of aerating a compacted lawn.
When is the best time to aerate a lawn?
The best time to aerate is during the growing season avoiding very hot weather that makes the dry soil difficult to penetrate, making hard work of aeration, so early or late spring or autumn are the best times.
How to tell if a Lawn Needs Aerating?
The signs that tell you your lawn needs aeration are not always obvious, but lawns especially on heavy clay soil that get regular heavy use and show wear and tear and thinning, turning brown quickly in dry weather need to be aerated on a regular basis, at least once a year. Or you may have had a visit from Mike the flowerpotman to investigate a lawn drainage problem who to your relief tells you that the lawn is compacted and won't need to be dug up and drainage installed, just aerated.
Your lawn will need aerating if: